Windlass.



C. ANDRADE, JR.

WINDLASS,

APPucAnou FILED MAR.8|1917- Patentad June 12, 191?.

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WINDLASS.

APPLICATION FILED MAR. 8, I917- Patented June 12, 1917.

3 SHEETSSHEET 2.

i'N V EN TOR.

WITNESSES:

.C. ANDRADE, JR.

WINDLASS.

APPLWCATION FILED MAR. 8. 1917.

3 SHEETS-SHEET 3. f Z' 1 67% 97 TMZ] WITNESSES: IN V E N TOR.

Mai 99W CIPRIANO ANDRADE, JR., OF NEW YORK, N.

WINDLASS.

naaaeae.

Application filed March 8, 1917.

To all whom it may concern:

Be it known that I, OIPRIANO ANDRADE, J12, a citizen of the United btates, residing at 328 West Eighty-fourth street, in the city of New York, in the county of New York and State of New York, have invented a new and useful Windlass, of which the following is a specification.

My invention relates to improvements in windlasses. The objects of my invention are to provide a cheap, light, compact and simple Windlass which will not require any wildcat or ratchet and in which the pawls shall engage directly with the cableeither chain or rope; to provide a form of windlass which will work with much less frictional wear on its moving parts than windlasses heretofore in use; to provide a windlass Which can accommodate chain with any length of link, without the necessity of having the chain links exactly fit the whelps of a particular wildcat; to provide a Windlass which will not only heave in the cable, but will also let it run or check it at will; and to provide a form of Windlass which will do all of the foregoing things by simply moving the handle bar backward and forward, thus requiring only one man to operatethe machine. It is to be noted that my device will work equally well with rope cable or chain cable.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which:

Figure 1 is a longitudinal elevation of my device showing all the parts in their relative position, but with a portion of the base 20 cut in the line M N Fig. 3, for purposes of clearness in illustration.

Fig. 2 is a transverse sectional elevationof my device taken on the plane X Y of Fig. 1

Fig. 3 is a plan view of the base 20 and its integral parts, viewed from above.

Fig. 4 is an end view of the base 20, viewed from the outside.

Fig. 5 is a detail view of half of the easing 40.

Fig. 6 is an end view of the 2 halves of casing 40 asembled in operative position with each other.

Fig. 7 is a longitudinal side elevation of heaving pawl 45.

Fig. 8 is an end elevation of 1 45 heaving paw Specification of Letters Patent.

Patented June 12, 1917.

Serial No. 153,297.

Fig. 9 is a longitudinal side elevation of half of casing 65.

Fig. 10 is an end view of the two component parts of casing 65 arranged in operatlve position with each other.

Fig. 11 is a plan view from above of holding pawl 60.

Fig. 12 is a longitudinal side elevation of holding'pawl 60.

Fig. 13 is a detail transverse section of pawl4c5 and sheave 30, with chain 55 in operative position between them.

Fig. 14 is a transverse section of pawl 15 and sheave 30, but with grooves adapted for rope.

Fig. 15 is a diagrammatic view showing the position of the handle bar in different parts of its arc of travel, and the fimctioning of the device at such different parts.

Fig. 16 is a longitudinal sectional elevation of sheave 30, adapted for rope, showing transverse corrugations, and shown on a large scale.

Similar Arabic numerals refer to similar parts throughout the several drawings.

The drawings on sheets 1 and 3 are all to the same scale and the drawings on sheet 2 are uniformly to a larger scale.

20 is a base, having integral with itself webbed supporting arms 21, bearing ring 22 and tongue 23, and having also a slotted rccess 24 as shown in Fig. 3, said slotted recess being adapted to loosely contain end 63 of holding pawl 60.

30 is a sheave rotatable with reference to bearing ring 22, having annular shoulders 31 and vertical groove 32 and horizontal groove 33 adapted to accommodate the chain. 3 1 is a supporting web which joins the main body of sheave 30 with annular bearing flange 35, which is adapted to rotate with reference to sleeve bearing 25.

25 is a sleeve hearing which, in the par ticular form of construction which I here show, is rendered motionless with reference to bearing rings 22 by means of set screws 26. It is obvious that set screws 26 might be run from sleeve bearing 25 to flange 35 of sheave 30, which would still produce relative rotative motion between sheave 30 and bearing rings 22. I, however, prefer the form of construction here shown, because it gives a larger bearing surface for the moving parts.

40 is a casing adapted to carry the heaving pawl 4:5. By reference to Fig. 6, it will be observed that said casing 40 is made in two halves, and has a projecting flange 11 adapted to lock under shoulder 31 of sheave 30 (see Fig. 2), thereby permitting casing 10 to travel circumferentially with reference to sheave 30 but preventing any radial motion of casing 40 away from the axis of sheave 30. 42 are counter-bored screw bolts adapted to hold the 2 halves of casing 10 in operative position. 43 is a bearing hole in casing 10 adapted to receive bolt 44:, which bolt passes through bearing hole 51 in heaving pawl 45. 46 is a groove in the bottom of heaving pawl l5, said groove 16 being adapted to accommodate the links 55 of the chain. 17 is a handle bar socket in heaving pawl 45, adapted to hold the handle bar 4:8. 19 is a nut and 50 is a cotter pin on the end of bolt 4%.

53 are fiat bearing surfaces on the lower face of heaving pawl 15, adapted to exert frictional pressure on the fiat links 54 between said heaving pawl -15 and the flat faces 36 on the periphery of sheave 30. (See Fig. 13).

52 (Fig. 14:) is a form of groove in heaving pawl 15, and 37 is a form of groove in sheave 30, adapted to handle rope. It will readily be seen that the grooved section 52 shown in heaving pawl 15 should also be used in holding pawl 60, when the Windlass is to be used for handling rope.

is a holding pawl, having integral trunnions 61 rotatable in bearing holes 67 in c asing 65. 62 are nuts threaded to the end of trunnions 61. 63 is the end of holding pawl 60, loosely fitting in the end of base 20, as shown in Figs. 1 and 4t. 66 are flanges integral with casings 65, said flanges 66 locking with shoulders 31 on sheave 30, whereby the casing is free to move circumferentially with reference to sheave 30, but is held rigidly against radial motion with reference to sheave 30. 68 is a groove in holding pawl 60, adapted to take the vertical links 55 of the chain.

39 are transverse corrugations on the sheave 30, for the purpose of securing a better hold on the cable. These corrugations are optional, as described in the next paragraph.

In practice, it is perhaps preferable to have shallow transverse corrugations on faces 53 of heaving pawl 45, and on the corresponding faces of holding pawl 60, and on faces 36 of sheave 30; or if rope is to be used, to have said shallow transverse corrugations on groove 52 in heaving pawl 45, and in the corresponding groove on holding pawl 60, and also on the groove 37 of sheave 30.

By making the grooves 4L6 and 32 some what shallower. pressure may also be exerted upon-the vertical links 55, as Well as upon the flat links 54, or by still further modifying the said grooves 56 and 32, the pressure can be applied exclusively to vertical links 55 and entirely taken from the flat links 541. In my opinion, however, the preferable form is that shown in the drawings, in which the pressure is applied exclusively upon flat links 54-.

The operation of my device is as follows:

Assume the handle bar to be in the position shown in Fig. 1, and it is desired to heave in chain. Move the handle bar 1S back in the direction of the arrow Z (Fig. 1) in the are marked Heave (Fig. 15). During this operation, the heaving pawl 45 on its faces 53 exerts a heavy frictional pressure on the flat link 5 1- of the chain,- and jams said link against face 36 of sheave 30. By reference to Fig. 1, it will be seen that the point of contact between the lower face 53 of heaving pawl 4:5 and the circumferenee 36 of sheave 30 is on the vertical line X Y, which makes the frictional pressure exerted by heaving pawl 45 radial to sheave 30. In the device as shown on the drawing submitted herewith, a pull of 10 pounds on the end of the handle bar will exert approximately a tractive pull of 100 pounds on the chain and will exert a frictional pressure of somewhere in the neighborhood of 250 pounds on the flat of the chain. lVith such tractive pull. of 100 pounds on the chain, the holding pawl 60 will exert a frictional pressure of between 300 and 400 pounds on the chain. During said heaving motion in the direction of the arrow Z, the casing 40, heaving pawl 15, sheave 30 and the chain will rotate as one mass. At this point, it is important to observe that the heaving pawl 45 is locked directly to chain 54 and sheave 30 through the instrumentality of easing l0 and flanges 41, and that no portion of the frictional moment exerted by the lower face 53 of pawl 45 is transmitted through any moving bearing surface in the Windlass. So far as I know, my device is unique in this respect. In the meantime, the frictional contact of holding pawl 60 against the flat links 54 of the chain will be relieved and the chain will slide down over the face of holding pawl 60. Should there be any tendency of the chain to jam in groove 32, the chain will be lifted out of said groove by the point of tongue 23.

When the handle bar has been swung down almost to the position marked Idle in Fig. 15, or anywhere in the are before reaching said point, handle bar 48 maybe started on its forward path against the direction of the arrow Z.

The instant this forward motion of handle bar 48 is begun, the frictional contact of the chain on the face of holding awl 60 lifts said holding pawl into locking contact with the chain and sheave 30. This locking motion is aided by the frictional contact of flanges 66 with shoulders 31, the result being an instantaneous locking contact of the chain 54 with holding pawl 60 and sheave 30. At the same time, the forward motion of handle bar 48 lifts faces 53 of heaving pawl 45 from binding contact with links 54, and permits heaving pawl 45 and casing to move forward against the direction of the arrow Z, the chain 5455 being meanwhile firmly held by holding pawl 60, as stated.

If it is desired to continue heaving in chain, the handle bar 48 will be moved back and forth in the are marked Heave (Fig. 15) as long as may be desired.

When it is desired to let the chain run free, the handle bar 48 is brought back to the position marked Idle. As soon as handle bar 48 reaches this portion of the are marked Idle, the lower face of casing 40 comes in contact with the upper face of holding pawl 60. Handle bar 48 is then withdrawn from socket 47 and the foot of the operator is placed on the upper portion of casing 40. It will be apparent that as soon as handle bar 48 is removed from slot 47, the frictional grip of heaving pawl and chain 54 is broken and as soon as the foot of the operator presses casing 40 down on the top of holding pawl 60, the frictional grip of holding pawl on chain 54 is likewise broken, and sheave 30 is free to rotate against the direction of arrow Z, carrying with it the chain 54-55. By relieving the pressure of casing 40 upon holding pawl 60, more or less friction can be applied between holding pawl 60 and chain 54, and when all the pressure is removed from the top of casing 40, the holding pawl 60, chain 54 and sheave 30 are held in locking contact, and the chain is held from any further motion against the arrow Z.

The hand of the operator can be used instead of the foot for producing the down ward pressure on casing 40, if desired.

In the following claims, I use the word Cable as a generic term, to embrace both chain cable and rope cable.

I claim- 1. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial motion of the member away from the sheave, and a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will.

2. In windlasses, a sheave, a chain cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any ra dial motion of the member away from the sheave, and a pawl mounted on said member, said pawl being adapted to hold the fiat link of the chain cable between the pawl and the sheave, or to release said chain cable at will.

3. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial motion of the member away from the sheave, a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will, and a handle bar adapted to actuate the pawl into and between the holding and releasing positions.

4. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial motion of the member away from the sheave, a pawl mounted 011 said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will, and a handle bar adapted to actuate the pawl into and between the holding and releasing position, and to move the pawl and the member circumferentially with reference to the sheave when the pawl is in the releasing position.

5. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial mo tion of the member away from the sheave, a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will, and a handle bar adapted to actuate the pawl into and between the holding and releasing position, and to move the pawl and the member circumferentially with reference to the sheave when the pawl is in the releasing position, and to move the pawl, the member, the sheave, and the cable together when the pawl is in the holding position.

6. In windlasses, a sheave, a cable carried on the sheave, a member whose concentric motion with reference to the axis of the sheave is limited by the pawl hereinafter mentioned, said member looking directly with the sheave to prevent any radial motion of the member away from the sheave, a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will, and means for holding the free end of said pawl against circumferential motion in either direction with reference to the sheave.

7. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial motion of the member away from the sheave, a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will; a second member whose concentric motion with reference to the axis of the sheave is limited by the second pawl hereinafter mentioned, said second member locking directly with the sheave to prevent any radial motion of the said second member away from the sheave, a second pawl mounted on said second member, said second pawl being adapted to hold the cable between the second pawl and the sheave, or to release said cable at will, and means for holding the free end of said second pawl against circumferential motion in either direction with reference to the sheave.

8. In windlasses, a sheave, a cable carried on the sheave, a member adapted to move in a path substantially concentric with the axis of the sheave, said member locking directly with the sheave to prevent any radial motion of the member a way from the sheave, a pawl mounted on said member, said pawl being adapted to hold the cable between the pawl and the sheave, or to release said cable at will; a second member whose concentric motion with reference to the axis of the sheave is limited by the second pawl hereinafter mentioned, said second member looking directly with the sheave to prevent any radial motion of the said second member away from the sheave, a second pawl mounted on said second member, said second pawl being adapted to hold the cable between the second pawl and the sheave, or to release said cable at will, and means for holding the free end of said second pawl against circumferential motion in either direction with reference to the sheave; the first mentioned member being adapted to transmit a tripping pressure to the second pawl, whereby said second pawl may release said cable.

GIPRIANO ANDRADE, J 1:.

lVitnesses VASSAR H. CAMPBELL, ARTHUR C. JonNsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

